Directional road sign revealing the existence of Interstate 5 Los Puerta Freeway, as seen on the GTA V reveal trailer.

The Los Puerta Freeway is a highway in Grand Theft Auto V. Nothing is really known about it as yet, except it is seen in the first trailer at about 0:32 and is based on the real-life
Interstate 5. Los Puerta translates to a grammatically incorrect "The Gate" in Spanish ('Los' is a plural, masculine article while 'Puerta' is a singular, feminine noun).